Robert D. LaBelle, William M. Fairbank, Rolf Engleman, and Richard A. Keller, "Isotope shifts and hyperfine structure of Pt i transitions in a hollow-cathode discharge," J. Opt. Soc. Am. B 6, 137-141 (1989)
Saturation spectroscopy in a hollow-cathode discharge is used to measure isotope shifts and hyperfine splittings for the 270.24- and 270.59-nm transitions in Pt i. From a systematic analysis of these and other data, the following relative changes in nuclear-charge ratios are derived: 192–190 = 0.8164(45), 194–192 = 0.8997(26), 196–194 = 0.9253(17), 198–196 = 1, and 195–194 = 0.4254(16). An improved value of 63.95(3) mK is also derived for the hyperfine constant A of the 37769-cm−1 state. These constants are also used to assess the accuracy of techniques for extracting centroids, hyperfine constants, and isotope shifts from Fourier-transform spectra.
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Observed Positions of Isotopic and Hyperfine Structure Lines Relative to 194Pt (in mK)a
Pt Isotope
270.24 nm
270.59 nm
190
–
287.40(5)
192
66.89(8)
151.13(5)
194
0.00(7)
0.00(6)
196
−68.98(10)
−155.81(7)
198
−143.84(8)
−324.95(7)
195A (5/2, 3/2)
−290.12(9)
195B (5/2, 5/2)
[−72.72(10)]
195C (7/2, 5/2)
151.11(7)
195A (5/2, 7/2)
−128.40(7)
195B (7/2, 9/2)
−32.01(7)
195C (7/2, 7/2)
95.46(7)
195 (ν0)
−31.78(6)
−71.30(5)
For the 195Pt lines, the F values (F′ and F″) for the upper and lower substrates, respectively, are given in parentheses. Note that 1 mK = 10−3 cm−1.
Derived from the other measurements, as described in the text.
The mass shifts listed are for the reference pair 194–196.
AMS′λ270.59 = MSλ270.59 − MSλFS270.59/FSλ.
Calculated from (SMS/NMS)270.59 assigned = 6(3), as described in the text.
Table 4
Relative Changes in the Nuclear-Charge Radius of the Stable Pt Isotopesa
To test the consistency of our experimental data and to illustrate the benefit of an accurate calculation of one specific mass shift, the error limits for the 270.24- and 270.59-nm data do not include the uncertainty ±3 in SMS/NMS (270.59 nm). This is, however, included in the weighted averages listed under All Data.
Values listed in parentheses are fixed constants for the corresponding fit.
IS = ν(196) − ν(194).
Ref, 12,
This research.
Ref. 5.
Ref. 13.
Tables (5)
Table 1
Observed Positions of Isotopic and Hyperfine Structure Lines Relative to 194Pt (in mK)a
Pt Isotope
270.24 nm
270.59 nm
190
–
287.40(5)
192
66.89(8)
151.13(5)
194
0.00(7)
0.00(6)
196
−68.98(10)
−155.81(7)
198
−143.84(8)
−324.95(7)
195A (5/2, 3/2)
−290.12(9)
195B (5/2, 5/2)
[−72.72(10)]
195C (7/2, 5/2)
151.11(7)
195A (5/2, 7/2)
−128.40(7)
195B (7/2, 9/2)
−32.01(7)
195C (7/2, 7/2)
95.46(7)
195 (ν0)
−31.78(6)
−71.30(5)
For the 195Pt lines, the F values (F′ and F″) for the upper and lower substrates, respectively, are given in parentheses. Note that 1 mK = 10−3 cm−1.
Derived from the other measurements, as described in the text.
The mass shifts listed are for the reference pair 194–196.
AMS′λ270.59 = MSλ270.59 − MSλFS270.59/FSλ.
Calculated from (SMS/NMS)270.59 assigned = 6(3), as described in the text.
Table 4
Relative Changes in the Nuclear-Charge Radius of the Stable Pt Isotopesa
To test the consistency of our experimental data and to illustrate the benefit of an accurate calculation of one specific mass shift, the error limits for the 270.24- and 270.59-nm data do not include the uncertainty ±3 in SMS/NMS (270.59 nm). This is, however, included in the weighted averages listed under All Data.
Add to BibSonomy